Well there's no other way around it - you can either publish all the dependencies with each project or share them in a central place.

Central places don't work very well and again, file space is very cheap. Most binaries compress down very small so there really shouldn't be a disk space issue. And you can always remove dependencies if necessary.

It's just not something that has ever been a problem in over a decade of building and publishing .NET apps.

yeah, you're probably right !